Having suffered from serious pollutions, he made up his mind to devote his life to __________ pollution from __________ again.
A.preventing; happening |
B.prevent; happen |
C.preventing; happens |
D.preventing; will happen |
From the school name on the package, we guessed that it might belong to a student of our school.
A.to mark | B.marking | C.marked | D.having been marked |
studying abroad can be hard, it can broaden your understanding of the word.
A.If | B.While | C.Because | D.Since |
The problem wasn’t hard. The little girl worked it out quickly.
A.that | B.much | C.enough | D.a little |
Jane accidentally where she had hidden the birthday present for her mother.
A.turned out | B.let out | C.came out | D.took out |
An earthquake happened in Haiti on Jan.12,2010, many countries in the world paid close attention to.
A.where | B.when | C.which | D.what |